Patents by Inventor Cheng-Hsing Liao

Cheng-Hsing Liao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140368561
    Abstract: A micro-LED display device and modulation scheme for applying image data to an imager. The micro-LED display, including a plurality of micro-LED pixels disposed in rows and columns array, may use a modulation scheme. The method includes using row write actions to write data to said rows of micro-LED pixels; and using spacing of row write actions to create grey scale modulation, wherein one spacing between sequential row write actions is at a first distance while another spacing between sequential row write actions is at a second distance greater than said first distance.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 18, 2014
    Inventors: Cheng-Hsing Liao, Chia-Jen Tsai, Edwin Lyle Hudson, David Charles Mcdonald, David John Cowl
  • Patent number: 8228472
    Abstract: A liquid crystal lens cell comprises a pair of flat layers with the liquid crystal lens supported between the layers. One of the layers supports a planar electrode made of ITO. The other electrode, also formed of ITO, is supported in the center of the opposing substrate and projects downwardly toward the center of the liquid crystal layer. A power supply creates a potential difference between the two electrodes and accordingly imposes a non-uniform electric field on the liquid crystal modules which aligns them in which a way as to act as a lens. By varying the voltage between the two electrodes the focal length of the lens may be controlled. A central electrode may be in the form of a beam or of a pointed tip. In other embodiments of the invention an electrode having a central hole may be associated with the central electrode or the planar electrode.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: July 24, 2012
    Assignee: Tunable Optix Corporation
    Inventors: Ling-Yuan Tseng, Cheng-Hsing Liao
  • Patent number: 8100539
    Abstract: A system for photographing an object and generating a three-dimensional display of the object without the need for the observer to wear special glasses employs a camera having an electronically tunable liquid crystal lens in which the focal plane of the lens may be adjusted by controlling the voltage on the lens. An operator of the camera focuses the camera on the scene to be imaged and the camera records a series of images at closely spaced focal lengths by varying the voltage applied to the lens between the images. The digitally recorded images are then used to generate a display on a multilayer transparent display substrate with pixel addressing capabilities. Each of the recorded images at the differing focal lengths are displayed on one of the layers of the display screen, with the closest focal length recorded being displayed on the top screen, the one most proximate to the observer, and with successive images on other screens. A three-dimensional image is produced.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: January 24, 2012
    Assignee: Tunable Optix Corporation
    Inventors: Ling-Yuan Tseng, Cheng-Hsing Liao
  • Patent number: 7724347
    Abstract: An electrically controlled liquid crystal zoom lens system for a camera or the like is set to a desired zoom by an operator. The desired zoom signal is provided to an image signal processor which also receives the output of an image sensor at the output of the lens. The process generates a control signal for a power supply which adjusts the voltage between electrodes sandwiching the liquid crystal module. By rapid, iterative adjustment the actual zoom is brought to the desired zoom level. The liquid crystal module is combined in series with conventional lenses which may be integrated with the liquid crystal.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: May 25, 2010
    Assignee: Tunable Optix Corporation
    Inventors: Ling-Yuan Tseng, Cheng-Hsing Liao, Atsuo Kusada
  • Publication number: 20090219475
    Abstract: A liquid crystal lens cell comprises a pair of flat layers with the liquid crystal lens supported between the layers. One of the layers supports a planar electrode made of ITO. The other electrode, also formed of ITO, is supported in the center of the opposing substrate and projects downwardly toward the center of the liquid crystal layer. A power supply creates a potential difference between the two electrodes and accordingly imposes a non-uniform electric field on the liquid crystal modules which aligns them in which a way as to act as a lens. By varying the voltage between the two electrodes the focal length of the lens may be controlled. A central electrode may be in the form of a beam or of a pointed tip. In other embodiments of the invention an electrode having a central hole may be associated with the central electrode or the planar electrode.
    Type: Application
    Filed: March 3, 2009
    Publication date: September 3, 2009
    Inventors: Ling-Yuan Tseng, Cheng-Hsing Liao
  • Publication number: 20080252556
    Abstract: A system for photographing an object and generating a three-dimensional display of the object without the need for the observer to wear special glasses employs a camera having an electronically tunable liquid crystal lens in which the focal plane of the lens may be adjusted by controlling the voltage on the lens. An operator of the camera focuses the camera on the scene to be imaged and the camera records a series of images at closely spaced focal lengths by varying the voltage applied to the lens between the images. The digitally recorded images are then used to generate a display on a multilayer transparent display substrate with pixel addressing capabilities. Each of the recorded images at the differing focal lengths are displayed on one of the layers of the display screen, with the closest focal length recorded being displayed on the top screen, the one most proximate to the observer, and with successive images on other screens. A three-dimensional image is produced.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Inventors: LING-YUAN TSENG, Cheng-Hsing Liao
  • Publication number: 20080211799
    Abstract: An optimized driving method for thick liquid crystal cavity rap (thick cell) type liquid crystal panel, that is used for common electrode driving of liquid crystal display (LCD) panel, wherein a second DC or AC adjustable-period or tunable power source is applied to drive the common electrode of the LCD panel so as to minimize voltage excursion without having to change signal, and wherein data signals pass through TFT-type data driver, thereby making the work function between the aluminum metallic layer and the electrode of liquid crystal display panel to be near a stable state to avoid quality problems associated with image flickering.
    Type: Application
    Filed: December 19, 2007
    Publication date: September 4, 2008
    Inventor: Cheng-Hsing Liao
  • Publication number: 20080088756
    Abstract: An electrically controlled liquid crystal zoom lens system for a camera or the like is set to a desired zoom by an operator. The desired zoom signal is provided to an image signal processor which also receives the output of an image sensor at the output of the lens. The process generates a control signal for a power supply which adjusts the voltage between electrodes sandwiching the liquid crystal module. By rapid, iterative adjustment the actual zoom is brought to the desired zoom level. The liquid crystal module is combined in series with conventional lenses which may be integrated with the liquid crystal.
    Type: Application
    Filed: September 5, 2007
    Publication date: April 17, 2008
    Inventors: Ling-Yuan Tseng, Cheng-Hsing Liao, Atsuo Kusada
  • Publication number: 20060004804
    Abstract: In a system and method of timely updating specific fields of a web page, an updating program installed at the client timely downloads via a network update data stored at a server, and writes the update data in a specific field of the web page displayed in the browser of the client.
    Type: Application
    Filed: May 25, 2004
    Publication date: January 5, 2006
    Inventor: Cheng-Hsing Liao
  • Publication number: 20050240502
    Abstract: An online bidding method includes an online bidding system established on a web server for a purchaser to publish at least an inquiring item, and a plurality of suppliers to compete the bids. The method includes the following steps. Receive inquiry information of at least a bid item registered by an inquirer. Store each bid item in a respective databank in the web server. When receive bid information from a bidder, store the information in the correspondent bid item databank. Calculate the rank of initial bids of all bidders according to the initial bid prices and the preset weightings. Store the rank in the correspondent bid item databank. The bidders update their bids with the specific reduction ratio. Then, the system stores the data in the correspondent bid item databank, and updates the rank by the newest bid prices and the preset weightings.
    Type: Application
    Filed: April 23, 2004
    Publication date: October 27, 2005
    Inventors: Cheng-Hsing Liao, Li-Hwa Lin